Anthraquinone dyestuffs

ABSTRACT

Anthraquinone dyestuffs which in the acid form correspond to the formula   WHEREIN R, R1, the two X, A and n have the meaning given in the description. The new dyestuffs are valuable products which are outstandingly suitable for dyeing and printing natural and synthetic polyamide materials such as wool, silk, polyamide and the like, on which, in part, brilliant dyeings with good to very good fastness properties are obtained.

United States Patent 1191 1451 Nov. 18, 1975 Hohmann et a1.

[ ANTHRAQUINONE DYESTUFFS [75] Inventors: Walter Hohmann, Leverkusen;

Helmut Herzog, Bergisch-Neukirchen; Hans-Samuel Bien, Burscheid, all of Germany [73] Assignee: Bayer Aktiengesellschaft,

Leverkusen-Bayerwerk, Germany 22 Filed: Jan. 3, 1973 211 App]. No.: 320,721

[30] Foreign Application Priority Data Jan. 3, 1972 Germany 2200107 [52] US. Cl 260/239.3 T; 8/39; 8/40; 260/247.l A; 260/249; 260/256.5 R;

Weinand et a1 260/372 3,154,567 10/1964 Eisele et a1. 260/374 I FOREIGN PATENTS OR APPLlCATlONS 532,954 2/1941 United Kingdom 260/371 1,546,177 11/1968 France ..260/372 Primary Examiner -Robert Gerstl Assistant E.\'aminerE. Jane Skelly Attorney, Agent, or FirmPlumley & Tyner ABSTRACT Anthraquinone dyestuffs which in the acid form correspond to the formula (l t-30 1i) wherein R, R the two X, A and n have the meaning given in the description. The new dyestuffs are valuable products which are outstandingly suitable for dyeing and printing natural and synthetic polyamide materials such as wool, silk, polyamide and the like, on which, in part, brilliant dyeings with good to very good fastness properties are obtained.

1 Claim, No Drawings .1 ANTHRAQUINONE D YESTUFF S (A-SO H) NH L X (i NH R wherein I R and R: alkyl, cycloalkyl, aralkyl, aryl or a heterocyclic radical, with R and R not being permitted to have the same meaning simultaneously,

one X nitro or optionally substituted amino, the

other X hydrogen,

A a direct bond or O, with the radical -O- SO 'H being bonded to a C atom of the radicals R, R or X and the radical SO H being bonded to a C atom of an aromaticcarbocyclic ring in X, R or R or to a C atom of the anthraquinone nucleus and n denotes l 4,

as well as processes for their manufacture and their use for dyeing and printing natural and synthetic fibre materials.

Preferred dyestuffs are those which in the acid form correspond to the formula Y o NHR-(ASO5H)P (II) in which I R, R and A have the meaning indicated in the formula (l), one Y represents an acylamino radical, the other Y represents hydrogen and I p and m denote the numbers 0 3, with p m l R, R,, A, p andm have the meaning indicated in the formula (ll),

one Z represents an optionally substituted amino group and LII I 2 the other Z represents hydrogen. Further preferred dyestuffs are those which in the acid form correspond to the formula 1 U 1 i v NH-R-(ASO rU f B (q) (ASO H) in which R represents an alkyl, cycloalkyl or aralkyl radical, D and D represent a nitro group or hydrogen, but

cannot simultaneously have thesame meaning,

B represents a substituent,

A represents a direct bond or O; with the SO H group being bonded to a'C atom of an aromaticcarbocyclic ring if A is a direct bond,

4 represents the numbers 0 4 and r and m represent the numbers 0 3, with r m 1 4 and R-(ASO H) and Y I NH-R (AS0 3) (q) T in which; i

R represents analkyl, cycloalkyl, aralkyl, aryl or heterocyclic radical with R and the radical Q G M) not being allowed to have the same meaning simultaneously, one Y represents an acylamino radical, especially also a reactive acylamino radical, the other Y represents hydrogen, O represents an optionally. substituted C -C alkylene radical or adirect bond,

3 B represents a substituent, A represents a direct bond or O, with the radical ASO H being bonded to a C atom of the radicals R, B and Y ifA O, and to a C atom of R, B, Y or the anthraquinone nucleus if A represents a direct bond and q represents the numbers 4 and n represents the numbers 1 4.- Within this group, those dyestuffs are preferred especially in the case of the non-fibre-reactive acylamino radicals in which R representsa secondary alkyl radical or a cyclohexyl radical.

Further preferred dyestuffs are those which in the acid form correspond to the formula in which R, Q, B, q, A and n have the meaning indicated in the formula (V),

B in particular can also denote a reactive acylamino radical,

one Z, represents an amino, alkylamino, aralkylamino, cycloalkylamino 0r arylamino group,

the other Z represents hydrogen and the radical OSO H is bonded to a C atom of the radicals R or B and the radical SO H is bonded toa C atom of R, B or the anthraquinone nucleus, and

R and I are not allowed to have the same meaning simultaneously.

Within this group, those dyestuffs in which R represents a secondary alkyl radical or a cyclohexyl radical are particularly preferred.

Suitable alkyl radicals R and R, are especially C -C alkyl radicals such as methyl, ethyl, propyl, butyl, hexyl or dodecyl, which can optionally possess further su bstituents, for example nitrile, hydroxyl, nitro, halogen, alkoxy, alkoxycarbonyl, alkoxycarbonyloxy, alkylcarbonyloxy, acylamino especially alkylcarbonylamino, alkylsulphonyl, acylsulphonyl, alkylaminoca rbonyloxy, acylaminocarbonyloxy, alkylaminocarbonylamino, acylaminocarbonylamino, alkylaminothiocarbonylamino, alkylaminosulphonyloxy, acylaminosulphonyloxy, aryloxy, amino, rrionoalkylamino and dialkylamino, arylcarbonyloxy and alkylmercapto.

The alkyl and alkoxy groups are at the same time preferably those with 1 -4 C atoms and the aryl groups are preferably optionally substituted phenyl groups.

Examples of such alkyl radicals are: B-chloroethyl, B,,B,/3-trifluoroethyl, B,e-dichloropropyl, B-cyanoethyl, B-cyanoethoxyethyl, ,B-methoxyethyl, S-methoxybutyl, glycidyl, B-hydroxyethyl, {3,y-dihydroxypropyl, B-nitroethyl, ,B-methoxycarbonylethyl, ,B-propoxycarbonylethyl, fi-cyarioalkoxycarbonylethyl, B-methoxycarbonylpropyl, ,B-acetylaminoethyl, 'B-acetoxyethyl, B-propoxyethyl, [3,y-diacet0xypropyl, ,B-acetylaminopropyl, B-methylsulphonylethyl, ,B-ethylsulphonylethyl, 'y-chlorophenylsulphonylpropyl, ,B-methylaminocarbonyloxyethyl, B-phenylaminocarbonyloxyethyl, B- methylaminocarbonylaminoethyl, ,B-methoxycarbonyloxyethyl, B-methylaminothiocarbonylaminoethyl, B-methylaminosulphonyloxyethyl, yphenylaminosulphonyloxypropyl, B-nitrophenoxyethyl, B-hydroxyphenoxyethyl, ,B-cyanoethoxycarbonylethyl, ,B-carboxyethyl, B-acetylaminoethyl, y-aminopropyl, ,B-diethylaminoethyl, B-benzoyloxyethyl and B-ethylsulphonylethyl. Suitable aryl radicals R and R are especially optionally substituted phenyl and naphthyl radicals. As substituents there may be mentioned: the abovementioned C -C -alkyl radicals, Cl, Br, F, alkoxy, especially C -C,-alkoxy which is optionally substituted further, optionally substituted phenyl, cyclohexyl, aryloxy, carboxyl, acylamino, especially alkylcarbonylamino, alkylthio, arylthio, alkylsulphonyl, arylsulphonyl, amino, alkylsulphonyloxy, arylsulphonyloxy, alkoxysulphonyl, aryloxysulphonyl, alkoxycarbonyl, alkylaminosulphonyl, aralkylaminosulphonyl, dialkylaminosulphonyl, phthalimidomethylene, capr0lactam-(N)-methylene, alkylcarbonylaminomethylene, arylcarbonylaminomethylene, alkylamino-, dialkylamino-, cycloalkylaminoand aralkylamino-carbonylamino. Alkyl and alkoxy are at the same time preferably radicals with l 4 C atoms and aryl is in particular optionally substituted phenyl.

The following radicals may be mentioned as examples: phenyl, naphthyl, methyl-, 2,6-dimethyl-, 2,4,6- trimethyl-, ethyl-, 4-tert.-butyl-, 4-dodecyl-, 2-methyl- 6-ethyl, 2,4-dimethyl-6-ethyl-, chloro-, bromo-, fluoro-, cyano-, methoxy-, ethoxy-, B-hydroxyethoxy-, ,B-cyanoethoxy-, 3-chloro-4-methoxy-, 2-methyl-4-methoxy-, 2,5-diethoxy-, 4-methylaminomethyl-, 4-phenyl-, 4- cyclohexyl-, 2,5-dimethoxy-, 2-, 3- or 4-dimethylaminomethyl-, 4-phenoxy-, 4-methylthio-, 4-phenylthio-, 3-(B-hydroxyethylsulphonyl)-, 3-phenylsulphonyl-, 2-, 3- or 4-amino-, acetylamino-, N- methylacetylamino-, N-cyclohexylacetylamino-, hydroxyacetylamino-, methoxyacetylamino-, phenylsulph0nyl0xy-, methylsulphonyloxy-, phenoxysulphonyl-, ethoxysulpho nyl carboxy-4-acetylamin0-2-carboxy-, methoxycarbonyl-, acetyl-, phenylcarbonyl-, diethylaminosulphonyl-, N-( ,B-hydroxyethyl )-N-( B-cyanoethyl )-aminosulphonyl- N,N-di-( ,B-cyanoethylamino)- sulphonyl-, B-phenylethylaminosulph0nyl-, B-hydroxyethoxyethoxy-, 'y-hydroxypropoxy-, B-hydroxyethylmercapto-, N-(B-hydroxyethylamino)-carbonyl-, and B;y-dihydroxypropoxy-phenyl, and also methoxy-, cycl0hexyloxy-, benzyloxyand phenoxy-carbonylaminophenyl as well as phenyl radicals which are substituted by one or more phthalimido-N-methylene, caprolactamN-methylene, propionylaminomethylene, succinimidomethylene, benzoylaminomethylene, carbamoylaminomethylene or carbethoxyaminomethylene radicals.

Examples of suitable naphthyl radicals are 2-ethoxy-, 6-hydroxy-a-naphthyl and S-hydrOXy-B-naphthyl.

Suitable araliphatic radicals are especially phenylC C -alkyl radicals which are optionally substituted further, for example phenylmethyl, B-phenylethyl, 'yphenylpropyl, ,B-phenyl-a-methylethyl and y-phenyla,'y,'y-trimethylpropyl. 1

Suitable cycloaliphatic radicals are cyclohexyl, cyclohexyl substituted by C -C -alkyl, benzyl-cyclohexyl optionally further substituted in the benzene radical, phenoxy-cyclohexyl, C -C -alkoxycyclohexyl, aminocyclohexyl, alkylamino-cyclohexyl and acylaminocyclohexyl.

Examples of suitable optionally substituted amino groups are amino, alkylamino, dialkylamino, aralkylamino, arylamino and acylamino, with alkyl preferably representing C -C -alkyl which can be substituted as indicated above and arylamino preferably representing optionally substituted phenylamino.

Suitable acylamino groups are especially C -C alkylcarbonylamino groups and C -C -alkylsulphonylamino groups which can be substituted, for example, by chlorine, bromine, C -C alkoxy, hydroxyl, nitrile, amino and alkylamino, such as methyl-, ethyl-, dodecyl-, propenyl-, chloromethyl-, dichloromethyl-, B-chloroethyh, y-chloropropyl and ,B-cyanoethylcarbonylamino, also cyclohexylcarbonylamino and methample to the amino group in the nucleus.

Suitable fibre-reactive acylamino groups which can be present in the form of the substituents X, Y or Z or can be contained in the substituents R or R in R preferably as the substituent B, are especially triazinylamino, diazinylamino (optionally with one or more fused aromatic carbocyclic rings), benzthiazolecarbonylamino, benzthiazolesulphonylamino, thiazolecarbonylamino, thiazolesulphonylamino, benzoxazolecarbonylamino, benzoxazolesulphonylamino, benzimidazolecarbonylamino or benzimidazolesulphonylamino groups having at least one removable reactive substituent on the heterocyclic structure, especially halogen (Cl, Br and F) or sulphonyl groups, such as alkylsulphonyl and arylsulphonyl groups, ammonium groups or hydrazinium groups. Suitable diazinylamino groups are especially pyrimidinylamino, pyrimidinecarbonylamino, phthalazinecarbonylamino and quinoxalinecarbonylamino or quinoxalinesulphonylamino groups with fluorine, chlorine or alkylor aryl-sulphonyl groups as removable groups.

Individual examples of suitable fibre-reactive acyl radicals are: monoor di-halogeno-symmetrical-triazinyl radicals, for example 2,4-dichlorotriazinyI-6, 2- amino-4-chlorotriazinyl-6, 2-alkylamino-4-chlorotriazinyl-6, such as 2-methylamino-4-chlorotriazinyl-6, Z-ethylaminoor 2-propylamino4-chlorotriazinyl-6, 2- ,B-hydroxyethylamino-4-chlorotriazinyl-6, 2-di-,B-

- nyl,

hydroxyethylamino-4-chlorotriazinyl-6 and the corresponding sulphuric acid half-esters, 2-diethylamino-4- chlorotriazinyl-6, 2-morpholinoor 2-piperidino-4- chlorotriazinyl-6,2-cyclohexylamino-4-chlorotriazinyl- 6, 2-arylaminoand substituted arylamino-4-chlorotriazinyl-6, such as 2-phenylamino4-chlorotriazinyl-6, 2-(o-, mor p-carboxyor sulpho-phenyl)amino-4- chlorotriazinyl-6, 2-alkoxy-4-chlorotriazinyl-6, such as 2-methoxyor ethoxy-4-chlorotriazinyl-6, Z-(phenylsulphonylmethoxy)-4-chlorotriazinyl-6, 2-aryloxyand substituted aryloxy-4-chlorotriazinyl-6, such as 2- phenoxy-4-chlorotriazinyl-6, 2-(p-sulphophenyl)-oxy- 4-chlorotriazinyl-6, 2-(o-, mor pmethylor methoxyphenyl)-oxy-4-chlorotriazinyl-6, 2-alkylmercaptoor Z-arylmercaptoor 2-(substituted aryl)-mercapto-4- chlorotriazinyl-6, such as Z-B-hydroxyethyl)-mercapto- 4-chlorotriazinyl-6, 2-phenylmercapto-4-chlorotriazinyl-6, 2-(4 '-methylphenyl )-mercapto- 4-chlorotriazinyl-6, 2-( 2 ',4'-dinitro)-phenylmercapto-4-chlorotriazinyl-6, 2-methyl-4-chlorotriazinyl-6, 2-phenyl-4-chlorotriazinyl-6, mono-, dior tri-halogenopyrimidinyl radicals, such as 2,4-dichloropyrimidinyl-6, 2,4,5-trichloropyrimidinyl-6, 2,4-dichloro-5-nitroor -5-methylor -5-carboxymethylor -5-carboxyor -5-cyanoor -5-vinylor -5-sulphoor -5-mono-, -dior -trichloromethylor -5-carboalkoxy-pyrimidinyl-6, 2,6- dichloropyrimidine-4-carbonyl, 2,4-dichloropyrimidine-S-carbonyl, 2-chloro-4-methylpyrimidine-5-carbonyl, 2-methyl-4-chloropyrimidine-5-carbonyl, 2- methylthio-4-fluoropyrimidine-S-carbohyl, 6-methyl- 2,4-dichloropyrimidine-5-carbonyl, 2,4,6-trichloropyrimidine-S-carbonyl, 2,4-dichloropyrimidine- 5-sulphonyl, 2-chloroquinoxaline-3-carbonyl, 2- or 3- monochloroquinoxaline-6-carbonyl, 2- or 3-monochloroquinoxaline-6-sulphonyl, 2,3-dichloroquinoxaline-6-carbonyl, 2,3-dichloroquinoxaline-6-sulphonyl, l,4-dichlorophthalazine-6-sulphonyl or -6-carbonyl, 2,4-dichloroquinazoline-7- or -6-sulphonyl or -carbonyl, 2- or 3- or 4-(4',5-dichloropyridazon-6'-yl-l phenylsulphonyl or -carbonyl, B-(4',5 '-dichloropyridazon-6'-yl-l )-ethylcarbonyl, N-methyl-N-( 2 ,4- dichlorotriazinyl-6-)-carbamyl, N-methyl-N-(Z- methylamino-4-chlorotriazinyl-6)-carbamyl, N-methyl- N-( 2-dimethylamino-4-chlorotriazinyl-6 )-carbamyl,

N-methylor N-ethyl-N-(2,4-dichlorotriazinyl-6 )-aminoacetyl, N-methyl-N-(2,3-dichloroquinoxaline- 6-sulphonyl )aminoacetyl, N-methyl-N-( 2 ,3- dichloroquinoxaline-6-carbonyl)aminoacetyl, as well as the corresponding bromine and fluorine derivatives of the abovementioned chlorine-substituted heterocyclic radicals, including, for example, 2-fluoro-4- pyrimidinyl, 2,6-difluoro-4-pyrimidinyl, 2,6-difluoro-5- chloro-4-pyrimidinyl, 2-fluoro-5,6-dichloro-4- pyrimidinyl, 2,6-difluoro-S-methyl-4-pyrimidinyl, 2,5- difluoro-6-methyl-4-pyrimidinyl, 2-fluoro-5-methyl-6- chloro-4-pyrimidinyl, 2-fluoro-5-nitro-6-chloro-4- pyrimidinyl, 5-bromo-2-fluoro-4-pyrimidinyl, 2-fluoro- 5-cyano-4-pyrimidinyl, 2-fluoro-5-methyl-4-pyrimidi- 2 ,5 ,6-trifluoro-4-pyrimidinyl, 5-chloro-6- chloromethyl-2-fluoro-4-pyrimidinyl, 2,6-difluoro-5- bromo-4-pyrimidinyl, 2-fiuoro-5-bromo-6-methyl-4- pyrimidinyl 2-fluoro-5-bromo-6-chloromethyl-4- pyrimidinyl, 2,6-difluoro-5-chloromethyl-4-pyrimidinyl, 2,6-difliioro-5-nitro-4-pyrimidinyl, 2-fluoro-6- methyl-4-pyrimidinyl, 2-fluoro-5-chloro-6-methyl-4- pyrimidinyl, 2-fluoro-5-chloro-4-pyrimidinyl, 2-fluoro- 6-chloro-4-pyrimidinyl, 6-trifluoromethyl-5-chloro-2- fluoro-4-pyrimidinyl, 6-trifiuoromethyl-2-fluoro-4- pyrimidinyl, 2-fluoro-5-nitro-4-pyrimidinyl, 2-fluoro-5- trifiuoromethyl-4-pyrimidinyl, 2-fluoro-5-phenylor 7 --methyl-sulphonyl-4-pyrimidinyl, 2-fluoro-5-carbonamido-4-pyrimidinyl, 2-fluoro-5-carbomethoxy-4- pyrimidinyl, 2-fluoro-5-bromo-6-trifiuoromethyl-4- pyrimidinyl, 2-fluoro-6-carbonamido-4-pyrimidinyl, 2-fluoro-6-carbomethoxy-4-pyrimidinyl, 2-fluoro-6- phenyl-4-pyrimidinyl, 2-fluoro-6-cyano-4-pyrimidinyl, 2,6-difluoro-5-methylsulphonyl-4-pyrimidinyl, 2- fluoro-5-sulphonamido-4-pyrimidinyl, 2-fluoro-5- chloro-6-carbomethoxy-4-pyrimidinyl and 2,6- difluoro-S-trifluoromethyl-4-pyridiminyl; triazine radicals containing sulphonyl groups, such as 2,4-bis- (phenylsulphonyl )-triazinyl-6, 2-( 3 -caroxyphenyl sulphonyl-4-chlorotriazinyl-6-, 2-( 3 -sulphophenyl sulphonyl-4-chloro-triazinyl-6- and 2,4-bis-(3-carboxy-phenylsulphonyl-l ')-triazinyl-6; pyrimidine rings containing sulphonyl groups, such as 2-carboxymethylsulphonyl-pyrimidinyl-4, 2-methylsulphonyl-6-methylpyrimidinyl-4, 2-methylsulphonyl-6-ethyl-pyrimidinyl- 4, Z-phenylsulphonyl-5-chloro-6-methyl-pyrimidinyl-4, 2,6-bis-methylsulphonyl-pyrimidinyl-4, 2,6-bis-methylsulphonyl-S-chloro-pyrimidinyl-4, 2,4-bis-methylsulphonyl-pyrimidine-S-sulphonyl, 2-methyl-sulphonylpyrimidinyl-4, 2-phenylsulphonyl-pyrimidinyl-4, 2-trichloromethylsulphonyl-6-methyl-pyrimidinyl-4, 2- methylsulphonyl-5-chloro-6-methyl-pyrimidinyl-4, 2- methylsulphonyl-S-bromo-6-methyl-pyrimidinyl-4, 2- methylsulphonyl-S-chloro-6-ethyl-pyrimidinyl-4, 2- methylsulphonyl-S-chloro-6-chloromethylpyrimidinyl- 4, 2-methylsulphonyl-4-chloro-6-methyl-pyrimidine-5- sulphonyl, 2-methylsulphonyl-5-nitro-6-methylpyrimidinyl-4, 2,5,6-tris-methylsulphonyl-pyrimidinyl- 4, 2-methylsulphonyl-5,6-dimethyl-pyrimidinyl-4, 2- ethylsulphonyl-5-chloro-6-methylpyrimidinyl-4, 2- methylsulphonyl-6-chloro-pyrimidinyl-4, 2,6-bismethylsulphonyl-S-chloro-pyrimidinyl-4, Z-methylsulphonyl-6-carboxy-pyrimidinyl-4, 2-methylsulphonyl-5- sulpho-pyrimidinyl-4, 2-methylsulphonyl-6-carbomethoxy-pyrimidinyl-4, 2-methylsulphonyl-S-carboxypyrimidinyl-4, Z-methylsulphonyl-S-cyano-6-methoxypyrimidinyl-4, 2-methylsulphonyl-5-chloro-pyrimidinyl-4, 2-sulphoethylsulphonyl-6-methyl-pyrimidinyl-4, 2-methylsulphonyl-5-bromo-pyrimidinyl-4, sulphonyl-5-chloro-pyrimidinyl-4, 2-carboxymethylsulphonyl-S-chloro-6-methyl-pyrimidinyl-4, 2-methylsulphonyl-6-chloropyrimidine-4- and -5-carbonyl, 2,6- bis(methylsulphonyl)-pyrimidine-4- or -5-carbonyl, 2- ethylsulphonyl-6-chloropyrimidine-S-carbonyl, 2,4-bis- (methylsulphonyl)pyrimidine-S-sulphonyl, 2-methylsulphonyl-4-chloro-6-methylpyrimidine-S-sulphonyl or -carbonyl; triazine rings containing ammonium groups, such Z-trimethylammonium-4-phenylaminoor -4-(o-, m- 'or p-sulphophenyl )-aminotriazinyl-6, 2-( 1,1-dimethylhydrazinium)-4-phenylaminoor -4-(o-, m'- or'psulphophenyl)aminotriazinyl-6, 2-(2-isopropylidene- 1,1-dimethyl)-hydrazinium-4-phenylaminoor -4-( 0-, mor p-sulphophenyl)-aminotriazinyl-6, 2-N- aminopyrrolidiniumor 2-N-aminopiperidinium-4- phenylaminoor -4-(o-, mor p-sulphophenyl)-aminotriazinyl 6 and also 4-phenylaminoor 4-(sulphophenylamino)-triazinyl-6 radicals which in the 2-position contain 1,4-bis-azabicyclo[2,2,2]-octane or 1,2- bis-aza-bicyclo-[0,3,3]-octane bonded as a quaternary structure via a nitrogen bond, 2Tpyridinium-4- phenylaminoor -4-(o-, mor p-sulphophenyD-aminotriaZinyl-6 and corresponding 2-oniumtriazinyl-6 radicals which in the 4-position are substituted by alkylamino groups, such as methylamino, ethylamino or ,8- hydroxyethylamino groups, or alkoxy groups, such as methoxy or alkoxy groups, or aroxy groups, such-as 2-phenylphenoxy or sulphophenoxy groups; 2-chlorobenzthiazole-S- or -6-carbonyl or -5- or -6-sulphonyl, 2-arylsulphonylor -alkylsulphonyl-benzthiazole-S- or -6-carbony] or -5- -phenylsulphosulphonylpropionyl, -6-sulphonyl, such as 2-methylsulphonylor 2-ethylsulphonyl-benzthiazole-S- or -6-sulphonyl or -carbonyl, 2- phenylsulphonylbenzthiazole-S- or -6-sulphonyl or -carbonyl and the corresponding 2-sulphonyl-benzthiazole-S- or -6-carbonyl or -sulphonyl derivatives which contain sulpho groups in the fused benzene ring, 2-chlorobenzoxazole-5- or -6-carbonyl or -sulphonyl, 2-chlorobenzimidazole-5- or -6-carbonyl or -sulphonyl, 2-chloro-l-methylbenzimidazole-S- or -6-carbonyl or -sulphonyl, 2-chloro-4-methylthiazole-( 1,3 )-5-carbonyl or -4- or 5-sulphonyl.

Suitable fibre-reactive acyl groups of the aliphatic series (with a direct bond to the nuclear amino group) are, for example: acryloyl, mono-, dior tri-chloroacryloyl, such as COCH==CH-CL, COCC1=CH and COCC1=CHCH also COCCl=Cl-l- =COOH and COCl-l=CClCOOl-l, B-chloropropionyl, 3-phenylsulphosulphonyl-propionyl, 3-methylsulphonylpropionyl, 3-phenylsulphonylpropionyl, B- sulphato-ethylaminosulphonyl, vinylsulphonyl, B- chloroethylsulphonyl, B-sulphatoethylsulphonyl, B- methylsulphonyl-ethylsulphonyl, B-phenylsulphonylethylsulphonyl, 2-fluoro-2-chloro-3,3-difluorocyclobutane- 1 -carbonyl, 2,2, 3,3-tetrafluorocyclobutane-parbonyl-l or -sulphonyl-1, B-(2,2,3,3-tetrafluorocyclobutyl-1)-acryloyl, aor ,B-bromoacryloyl, aor ,B-alkylor -aryl-sulphonyl-acryloyl group, such as aor B-methylsulphonylacryloyl.

Particularly preferred reactive dyestuffs are those with dibromopropionylamino a-bromoacryloylamino and difluorochloropyrimidylamino group X, Y, Z or B.

As examples of Q there may be mentioned: methylene, 1,1- or 1,2-ethylene, 1,1-, 1,2-, 1,3- or 2,1-propylene, 2,4-butylene-, 3-isobutyl-3,l-propylene, l-isobutyl-3 l-propylene, l-cyclohexyl-3, l -propylene, 1,3 ,3- trimethyl-3 l -propylene l-methyl-3 ,3 -diethyl-3 ,1-propylene and 3,3-dimethyl-3,l-propylene.

As examples of B there may be mentioned: optionally substituted C -C -alkyl radicals, alkoxy, preferably C C -alkoxy, alkylmercapto, preferably C -C -alkylmercapto, alkylsulphonyl, preferably C -C -alkylsulphonyl, halogen atoms such as fluorine, chlorine and bromine, sulphonic acid amide or sulphonic acid ester radicals, carbonamide or carbonic acid ester radicals, nitrile, amino groups, which can be substituted, for example by alkyl or acyl radicals, and optionally substituted arylamino, arylsulphonyl, arylmercapto, aryloxy, arylsulphonylamino, arylaminosulphonyl, aralkylaminosulphonyl, aralkyl and aralkylene radicals, as well as phthalimido-N-methyl, caprolactam-N-methyl and chloroacetylaminomethyl radicals.

A further subject of the invention is a process for the manufacture of dyestuffs which in the acid form correspond to the general formula (I) which is characterised in that compounds of the general formula 0 NH-R (VIII x o G in which R and X have the meaning mentioned in the formula Y (I) and 9 G represents a replaceable substituent, preferably halogen, such as, for example, chlorine or bromine, are reacted with amines of the general formula in which R, has the meaning mentioned in the formula (I) to 10 give compounds of the general formula O NH-R in which R, R and X have the meaning mentioned in the formula (l) v and the compounds thus obtained are sulphonated, OH groups which may be present are converted into sulphuric acid half-ester groups or sulphuric acid halfester groups which may be present are subsequently saponified.

Compounds of the general formula (VI!) can be obtained in various ways. v

Thus it is possible to start from 1,5 and/or 1,8-dinitro-anthraquinone, and to react a nitro group with an amine of the formula I I H v i Y (x) 5 H-N-R to give compounds of the formula 40 D 0. NH-R QUC in which R has the abovementioned meaning, one D represents a nitro group and the other D represents hydrogen. From compounds of the formulav (XI), those of the formula NH-R Hal

. m which R and D have the meaning mentioned and Hal represents chlorine or bromine are obtained by the action of halogen, preferably bromine, or halogen-donating agents such as SO Cl or SOZBI'Z.

Starting from (Xll), further compounds of the formula (VII) can be obtained in various ways:

Reduction in accordance with processes which are in (XII) 55 themselves known, for example with iron in mineral acids or organic acids or with the alkali salts of hydrogen sulphide, yields compounds of the formula (XIII) in which R and Hal have the meaning mentioned in the formula (X11) and one Z represents an amino group and the other Z represents hydrogen.

Acylation of (Xlll) with carboxylic acids or organic sulphonic acids or their functional derivatives in accordance with methods which are in themselves known, for example in organic solvents and/or water, optionally with the addition of acid-binding agents and/or acylation catalysts, yields compounds of the formula R represents an optionally substituted alkyl, aralkyl or cycloalkyl radical yields compounds of the general formula in which R and Hal have the meaning mentioned in the formula (Xll) and one E represents an'NH-R radical and the other E represents hydrogen and R has the meaning mentioned.

Another way of obtaining compounds of the general formula (Vll) consists of only replacing one halogen atom by anamine of the formula (X) in compounds of the formula Hal I x o (XVII) Hal 11 in which X has the meaning mentioned in (I) and Hal represents chlorine or bromine.

In that case, in general,a mixture of two isomers is obtained which can optionally be separated at this stage or a subsequent reaction stage in accordance with processes which are in themselves known, such as, for example, recrystallisation from organic solvents or fractionation from aqueous mineral acids, such as, for example, hydrochloric acid or sulphuric acid.

The manufacture of compounds of the formula (XVII) is described, for example, in German Pat. Specifications No. 1,161,252, 1,151,517 and 1,154,490.

This process is particularly advantageous is R represents an optionally substituted araliphatic, aromatic or heteroaromatic radical.

One process variant for the manufacture of (IX) consists of reacting compounds of the formula (X11) with amines of the formula in which B represents a substituent or hydrogen and q representsthe numbers -.4 to give compounds of the formula (XVIII) (XIX) in which R, B and q have the meaning mentioned, one D represents a nitro group and the other D represents hydrogen and optionally reacting the compounds thus obtained with compounds of the formula Z I-I in which Z represents an optionally substituted alkyl, cycloalkyl, aralkyl, aryl or heterocycloamino radical to give compounds of the formula Z2 0 NH-R.

B(q) 2 d 1111.6

12 into the corresponding compounds with X NH by saponification.

A further process variant consists of reacting compounds of the general formula (I) or (1X) with X N11 by reaction with such substituted aliphatic, araliphatic, heterocyclic or above all aromatic hydrocarbons as contain at least one substituent replaceable by an amine radical, such as, for example, a bromine atom or a nitro group, examples of such hydrocarbons being, for example, bromobenzene, which can optionally be substituted by one or more halogen, alkoxy, alkyl or alkylcarbonylamino groups, or methyl iodide or ethyl bromide, to give the corresponding compounds in which X represents an amino group substituted by an optionally substituted alkyl, cycloalkyl, aralkyl, heteroalkyl, heteroaryl or aryl radical.

The reaction of the compounds V11, XII, X111, XIV and XIX with amines of the formulae VIII, XV or XVIII can be carried out in an aqueous, aqueous-organic or preferably organic medium, optionally in the presence of copper and/or copper salts and/or iodine as catalysts and optionally with the addition of acidbinding agents, such as the alkaline earth metal salts or preferably the alkali metal salts of acetic acid or carbonic acid, or organic tertiary bases such as, for example, pyridine.

Temperatures of between about 60C and 160C are required for this reaction, depending on the nature of the amine and of the substituents to be replaced. The replacement of chlorine as a rule requires somewhat higher temperatures than that of bromine. The nitro group is already rapidly replaced by alkylamines, cycloalkylamines and aralkylamines below C, whilst it is only replaced with difficulty by arylamines and heteroarylamines even at C. Higher temperatures are required for the reaction of those arylamines which are positively substituted in both o-positions to the amino group, or those which carry a negative substituent, than for the remaining. arylamines.

The time required for the reaction within the indi cated temperature range is between 30 minutes and 12 hours. If Xll is reacted with amines, very different results can be obtained depending on the nature of the amine. Thus with aliphatic, cycloaliphatic and araliphatic amines the nitro group is preferentially replaced,

5 whilst with aromatic or heteroaromatic amines the halogen atom is preferably replaced under the same reaction conditions. The halogen atom which has not been replaced, or the nitro group which has not been replaced, can then subsequently be replaced by the same or a different amine radical, if appropriate in the same reaction mixture, generally under more severe reaction conditions, for example elevated temperature. If in 1, VII or IX one of the radicals R, R or X contains one or more primary or secondary amino groups, (these not being directly bonded to the anthraquinone nucleus in the case of X), then these can be acylated, optionally partially.

For this purpose, the chlorides or anhydrides of the acyl radicals listed can be used as acylating agents. They can be either fibre-reactive or fibre-inactive in nature. This reaction can be carried out either with the sulphonated compounds containing amino groups or with the compounds free of sulpho groups, in accordance with-procedures which are in themselves known. Acyl radicals of which the amine derivatives are sensitive, or even unstable, towards sulphonating agents, such as, for example, some reactive acylamine radicals or numerous unreactive sulphonyl radicals, must be in- 13 troduced after the sulphonation of the dyestuff bases. Such reactions are then preferably carried out in an aqueous medium, optionally with addition of small amounts of organic solvents, in the pH range of between 4 and 10.

The sulphonation of the compounds VlIl can be carried out with sulphuric acid, sulphuric acid containing S chlorosulphonic acid or mixtures thereof at temperatures of between 20 and 80C but preferably at room temperature or slightly elevated temperature (say up to 50C), optionally in the presence of boric acid or in the presence of inorganic salts, for example sodium sulphate (to prevent undesired oxidations). OH groups present in the radicals R, R or X are thereby largely converted into the sulphuric acid half-esters. If the reaction is carried out in weakly aqueous sulphuric acids (which can contain up to of water) at room temperature or in anhydrous sulphuric acid below room temperature, only OH groups bonded to C atoms of alkyl or cycloalkyl radicals are esterified with sulphuric acid. The sulphonation of optionally positively substituted phenyl radicals on the other hand only takes place in anhydrous sulphuric acid or sulphuric acid containing a small amount of S0 If R, R and X represent radicals which cannot be sulphonated, the presence of at least one OH group esterified with sulphuric acid is necessary in the dyestuffs according to the invention. If R, R and X represent different radicals which are difficult to sulphonate, it is possible, through suitable choice of the sulphonating agent and- /or the temperature, only to sulphonate a part of these radicals. Thus at room temperature a phenylalkylamine radical is in general already sulphonated in 98% strength sulphuric acid, an unsubstituted phenylamine radical or a phenylamine radical substituted by an (alk)oxy group is only sulphonated in anhydrous sulphuric acid, a p-tert.-butylphenylamine radical or a pacetylaminophenyl radical is only sulphonated in sulphuric acid containing a small amount of S0 and a phenylamine radical which is negatively substituted, for example by the nitrile group, is only slowly sulphonated in sulphuric acid containing a large amount of S0 at elevated temperature.

Dyestuffs or dyestuff intermediates, containing sulphonic acid groups, which are obtained in this way can be converted, optionally partially and optionally after prior isolation, into sulphohalides, for example by means of thionyl chloride or thionyl bromide, at room temperature or elevated temperature, and the sulphohalide groups can be partially or completely converted in a known manner into sulphonamide groups by means of optionally substituted aliphatic, araliphatic, cycloaliphatic, aromatic or heterocyclic primary or secondary amines or ammonia in an aqueous, aqueousorganic or organic medium (which can also consist of excess amine). The dyestuffs containing sulphonamide groups, thus obtained, can optionally again be sulphonated and/or sulphated at external hydroxyl groups and/or hydroxyl groups esterified with sulphuric acid can again be saponified. The introduction of sulphonamide groups often brings about a distinct improvement in the solubility compared to the same dyestuffs without the sulphonamide grouping.

Finally, hydroxyl groups located directly on phenyl radicals can also be converted into their sulphuric acid halfesters, for example by reaction of chlorosulphonic acid in the presence of tertiary organic bases, for example pyridine.

Through suitable choice or combination of the possibilities mentioned a large number of variations as regards type, position and number of the groups in the dyestuffs which confer solubility in water is achievable. This is shown, for example, starting from a single dyestuff base in Example 3 of the examples section.

The dyestuffs or their direct intermediate products can be halogenated in accordance with methods which are in themselves known, for example by treatment with chlorine or bromine or with halogen-donating agents such as, for example, sulphuryl chloride or sulphuryl bromide. This can be carried out in solutions or suspensions in water, mineral acids optionally containing water, or organic solvents, or in mixtures of these.

If R or R represent positively substituted aryl radicals or X represents a positively substituted arylamine radical, these can be reacted in accordance with a procedure which is in itself known, with compounds which carry a reactive methylene group. This results in one or more linkages of the radical located on the methylene group to the phenyl radical via a methylene bridge. This reaction can be carried out with the dyestuff bases or their sulphonation products.

As radicals with an active methylene group there may be mentioned: N-methylol derivatives of pyrrolidone, propionylamine, benzoylamine, o-carboxybenzoylamine, succinimide, carbamoylamine, carbethoxyamine, chloroacetamine, phthalimide and especially caprolactam. The N-methylol compounds of homologous lactams with 8 l 1 ring members can also be employed.

The new dyestuffs are valuable products which are outstandingly suitable for dyeing and printing natural and synthetic polyamide materials such as wool, silk, polyamide and the like, on which, in part, brilliant dyeings with good to very good fastness properties are obtained. Where the dyestuffs contain fibre-reactive groups, they can, depending on the structure and on the process technique used, be employed in part for dyeing and printing cellulose fibres and regenerated cellulose fibres and in part also particularly advantageously for dyeing natural or synthetic polyamide fibres such as wool and polyamide. Dyestuffs which contain several, or preferably one, difluorochloropyrimidyl radical or an a-bromo-acrylic acid radical are particularly suitable for the latter purpose.

Amongst the dyestuffs without fibre-reactive groups or with groups which are only slightly fibre-reactive (for example dyestuffs which contain a (di)-chloroacetyl radical), those with only one group which confers solubility are particularly suitable for dyeing polyamide fibres from a neutral bath. On polyamide, they generally level out particularly well the stripiness caused by the material.

If above all a high solubility is demanded, the anionically difunctional or polyfunctional dyestuffs will be preferred.

lf particular value is attached to good levelling, dyestuffs of low molecular weight will be preferred whilst if high demands are made of fastness to wet processing, those of higher molecular weight will be employed. Compounds with X N0 or NHg, of the general formulae I and IX, are themselves dyestuffs, in part with a substantial level of fastness, but are also intermediate products for the manufacture of dyestuffs with X an NH group substituted by hydrocarbon or above all with X acylamino.

In the examples which follow, the temperatures quoted denote degrees Centigrade.

EXAMPLE 1 cn O NH-CH ere o H) O NH 5 2 b. The dyestuff base employed in a) can be obtained as follows: 60 g of l-isopropylamino-4-bromo-8-nitroanthraquinone, 120 ml of rn-toluidine, 20.5 g of potassium acetate and 0.05 g of Cu chloride are warmed to 100 105 until only traces of the starting material remain detectable (approx. 4 hours are required). The mixture is diluted with 240 ml of methanol at 70 and is subsequently stirred for some time at 50 60 and the product is filtered off hot, successively washed with hot methanol and hot water, and dried at 100. Yield 45 g.

EXAMPLE 2 a. 12 g of l-/3-hydroxyethylamino-4-p-tert- .butylanilino-5-nitro-anthraquinone are dissolved in 50 ml of cold monohydrate and sufficient strength oleum is progressively added until chromatographically no starting material and only traces of the initially produced sulphation product are detectable (approx. 20 ml are required). The melt is added to 1,000 ml of saturated sodium chloride solution at below 20, whilst stirring, and the resulting precipitate is filtered off. The filter residue is stirred with 250 ml of water, the mixture is adjusted to pH 7 with dilute sodium hydroxide solution and the product is filtered off, washed with halfconcentrated sodium chloride solution and dried. 14.6 g of a dyestuff which in the acid form corresponds to the formula and which dyes polyamide fibres in a greenish-tinged blue shade, are obtained.

b. The dyestuff base employed in a) is obtained by reaction. of l-hydroxyethylamino-5-nitro-4-bromoanthraquinone with p-tert.butylaniline, analogously to Example 1 b).

c. 5 g of the dyestuff obtained according to a) are treated for lhour in ml of 2 N hydrochloric acid at l00, thereby yielding 3.2 g of the dyestuff which in the acid form corresponds to the formula g 3 0 .0 NE-Q-C-CH3 and dyes polyamide fibres in blue shades.

Using the methods described in Examples 1 and 2 and employing appropriate starting compounds, the dyestuffs of the general formula X 0 NK-R listed in Table I are obtained. They dye polyamide in the indicated colour shades.

Table I R 1 X X Colour shade l CH 3 SQ- H N0 H greenish-tinged H Q blue 2 CH H N0 strongly greenishtinged blue (SO H).

3 NO: H greenish-tinged E ,SO H blue 4 ,OCH H N0 green-blue 5 C NH-COCH NO H blue-green Table l-continued No. R R. X X Colour shade 2 fiocH qu H No lgallteiiesrh-tinged 21 /CH3 OCH;, NO2 H strongly greenish- CH tinged blue CH- SO H 22 O OSO3H -O H NO: iitzgggli'flglreeenish so H 23 CH; OSO;,H NO2 H green-blue 14 /CH2OSO3H CH=CH H N02 green-blue so H SO H 25 /CH;, -OCH iH H No H greenish-tinged CH I blue CH 503" H H 26 CH=CH=CH2 CH3 H NO2 greenish-tinged blue so H

27 CH CH-CH SO;,H H NO2 strongly greenishtinged blue I CH oCH EXAMPLE 3 hydrate at room temperature and the mixture is stirred a) 5 g of l-,8-hydroxyethylamino-4-tert.butylanilinountil only traces of the product obtained according to 5-B-phenylethylamino-anthraquinone are dissolved in a) are still present The mixture is poured into almost 50 ml of 95% strength sulphuric acid whilst cooling saturated sodium chloride solution whilst stirring and with ice and the mixture is stirred at room temperature the precipitate is filtered off, stirred up in 150 ml of wauntil chromatographically only traces of the base emter, adjusted to pH 7 with dilute sodium hydroxide soluployed remain detectable in a sample taken. tion and precipitated with 20 g of solid sodium chlo- After the customary working up, the dyestuff of the ride. The product is filtered off, washed with a little formula 20% strength sodium chloride solution and dried in vacuo at 60. 8.2 g of dyestuff of the formula H H11 CH CH 030 0 1m cu cH oso n CH CH 5 @a 0-41 c-ml H c-ca e (2 it @K 5 are obtained. The dyestuff dyes polyamide fibres in greenish-tinged blueshades. 15 Obtained It y polyamlde fiPTeS m blue f d. 5 g of colour base are dissolved in 25 ml of monob) T Colour base employ?d m a) was fiq by hydrate at room temperature, 7 ml of 20% strength reafmon of Y? Y h FY oleum are subsequently added and the mixture is s'mtrgamhmqumone Bphenylethylamme at 100 stirred for a further 5 hours at room temperature. It is 105 D worked up analogously to c and 8.3 g of a-dyestuff of The same product 18 obtained by reaction of 1- the formula hydroxyethylamino-5-B-phenyl-ethylamino-4-bromo- I anthraquinone (manufactured from l-hydroxye- O 3 thylamino-4-bromo-5-nitroanthraquinone by reaction with B-phenylethylamine) with tert.-butylaniline. 5 Further acid dyestuffs can be manufactured as fol- 1 O Q- t lows from this colour base: 3 5 5 c. 5 g of colour base are dissolved in 25 ml of monotially in an oily form which solidifies on cooling. The

product is filtered off cold, covered with dilute hydrochloric acid, washed with 10%v strength sodium chloride solution until neutral and dried in vacuo at 60. The resulting dyestuff corresponds to the formula and dyes polyamide fibres in muted blue shades.

f. The procedure described in e is followed by 5 g of the dyestuff obtained according to d are employed. The dyestuff obtained corresponds to the formula rm-ca -cn -on c-ca @11 0 E rm 0 HQ 3 5031:! 03K CH3 and dyes wool in similar shades to the dyestuff described under d.

EXAMPLE 4 a. 6 g of l-cyclohexylamino-4-,B-phenylethylamino-S- ,B-hydroxyethylamino-anthraquinone are dissolved in ml of anhydrous sulphuric acid, 2.5 ml of 20% strength oleum are added and the mixture is stirred for 1 /2 hours at room temperature. The melt is added to saturated sodium chloride solution at below 15, the resulting precipitate is'filtered off, the filter residue is stirred up in water 150ml), the pH is adjusted to 7 with dilute sodium hydroxide solution and the product is filtered off and rinsed with a little half-concentrated sodium chloride solution. 10.4 g of dry product which in the acid form corresponds to the formula v I so H 3 o mr-cn -ca -g is obtained. It dyes polyamide fibres, method, in strong blue shades. I

EXAMPLE 5 I a. 4.5 g of l-B-phenylethylarnino-4-p-toluidino-5- methylamino-anthraquinone are dissolved in 22 ml of anhydrous sulphuric acid at room temperature and a total of 9 ml of 20% strength oleum is added over the course of 5 hours at the same temperature. After the customary working up, 5.9 g of the dyestuff of the formula by any dyeing 0 NB-CH -CH SO H are obtained, which dyes polyamide fibres in a bluegreen shade.

b. The base employed in a) is obtained by reaction of l,4-dichloro-5-methylamino-anthraquinone with phenylethylamine/potassium acetate at l00l05, reaction of the mixture of l-B-phenylethylamino-4- chloro-S-methylamino-anthraquinone and l-B- phenylethylamino-4-chloro-8-methylamino-anthraquinone, thereby obtained, with p-toluidine in the presence of potassium acetate and copper chloride and iodine at l30-140 to give a mixture of l-B-phenylethylamino-4-p-toluidino-S-methylamino-anthraquinone and l-,B-phenylethylamino-4-p-toluidino-8- methylamino-anthraquinone, and fractional precipitation from sulphuric acid.

If the mixture is sulphonated as described in a), an

isomer mixture of the dyestuff described in a) and the dyestuff of the formula o Ira-@011 is obtained, which dyes polyamide fibres in a similar shade to the pure dyestuff obtained according to a.

EXAMPLE 6 cu -ca 5 is thereby obtained, which dyes wool in green-blue shades.

b. The colour base employed in a) was obtained by reaction of l-isopropylamino-4-bromo-5 -nitroanthraquinone with cyclohexylamine/potassium acetate/copper' chloride at 7580 and subsequent reaction of the l-isopropylamino-4-bromo-5-cyclohexylaminoanthraquinone thereby obtained with m-toluidinelpotassium acetate/copper chloride at 80 85.

EXAMPLE 7 a. 3 g of l-isopropylamino-4-pyridylamino-(2) anilinoanthraquinone are dissolvedjn 30 ml of monohydrate and 20% strength oleum is progressively added at room temperature until no further starting material is detectable (approx. 18 ml). After the usual working up (sodium chloride pH 2 3) thedyestuff of the formula o o o is obtained, which dyes polyamide fibres in a blue shade. Y

b. The starting product is obtained by reaction of. 1- isopropylam ino-4-pyridylarnino-( 2 )-5-aminoanthraquinone (Table 111, No. 43) with'bromoben z'ene w in the presence of potassium acetate and copper chloride and copper bronze.

EXAMPLE 8 a. 3 g of l-cyclohexylamino-4-o-anisidino-5- anilinoanthraquinone are dissolved in 14 ml of cold 98% strength sulphuric acid and thereafter approx. 8

ml of strength oleum are added. After working up in the usual manner (sodium chloride; pH 7) 6 g of the dyestuff of the formula @1111 0 mg I I $05K.

are obtained, which dyes polyamide fibres in greenishtinged blue shades; 1

b. The base employed in a) is obtained by reaction of 1-cyclohexylamino-4-o-anisidino-S-amino-anthraquinone with bromobenzene/potassiurn acetate/copper powder activated with iodine/copper chloride at 156 160. g

, EXAMPLE 9 l a. 6 g of l-cyclohexylamino-4-rnesidino-5-B-hydroxyethylamino-anthraquinone are dissolved in 30 ml of 96% strength sulphuric acid, 2 g of N-methylolcaprolactam ,are added at 1020 and the mixture is stirred for a further 30 minutes. After working up, a product is obtained which essentially consists of the dyestuff of the formula b. If this product is esterified in anhydrous sulphuric acid and subsequently sulphonated in 20% strength oleum, the dyestuff of the formula is obtained, which dyes polyamide fibres in blue shades.

The product-employed in a is manufactured as follows:

c. l-Cyclohexylamino-4-bromo-5-B-hydroxyethylamino-anthraquinone obtained according to Example 4 b), is reacted with mesidine/potassium acetate/- copper chloride at l20140 and the product is subsequently precipitated with hydrochloric acid.

The following dyestuffs, which correspond to the general formula v are obtained in accordance with the methods described in Examples 3-9, using appropriate starting compounds. The dyestuffs dye polyamide in the colour shades indicated.

Table lI-continued l Colour shade X Colour shade 9 H blue 2] blue-green lO greenish-tinged 22 blue blue 23 (SO H): blue greenish-tinged NH-CH blue Br 2 reenishtin ed 12 H greenish-tinged 4 H g g blue 25 H blue 13 CH greenish-tinged blue NH O -CCH 26 NH- NHCO-CH blue CH 27 H blue l4 H strongly greenishtinged blue 28 NH somewhat greenishtinged blue l bluegreen l6 greenishflnged 29 O greenish-tinged blue blue 17 SO H strongly greenish- 30 2 greenish tinged tinged blue blue NHCH -CH 3 l H h-t d l8 H clear. somewhat it? mg6 greenish-tinged blue l) H greenish-tinged 32 NH(CH. .CH O) -CH;, somewhat greenishblue tinged blue greenish-tinged u u 20 K blue NH CH CH NH gil'fizmsh tinged NHCCH C Q H l 34 H greenish-tinged H C blue EXAMPLE It can also be obtained by reduction of l-isoa. 100 g of l-isopropylamino-4-m-toluidino-8-aminoanthraquinone are dissolved in 500 ml of cold sulphuric acid monohydrate. 150 ml of strength oleum are added and the mixture is further stirred, whilst cold,

until starting material is no longer detectable in a sample which is taken and chromatographed. After the customary working up, the dyestuff of the formula propylamino4-m-toluidino-8-nitro-anthraquinone with aqueous sodium sulphide at about C. as well as by saponification of l-isopropylamino-4-m-toluidino-8- acetylamino-anthraquinone with 70% strength sulphuric acid at 60 70C.

EXAMPLE 11 a. 3.5 g of the compound are dissolved in 20 ml of cold anhydrous sulphuric acid and the mixture is stirred for a further 20 minutes. The solution is stirred into half-concentrated sodium chloride solution at below 20 and the resulting precipitate is filtered off. The filter residue is stirred into ml of 10% strength sodium chloride solution, the pH is adjusted to 7 with sodium hydroxide solution and the product is filtered off, washed with cold 5% strength sodium chloride solution and dried in vacuo. 4.3 g of the sulphuric acid half-ester of the compound of the above formula, which dyes polyamide fibres in bluegreen shades, are obtained.

The starting product is obtained by reaction of lmethylamino-4-bromo-S-amino-anthraquinone with o-anisidine/potassium acetate/copper chloride at 100 ll, further reaction of the l-methylamino-4-oanisidino-S-amino-anthraquinone thus obtained with chlorosulphonic acid at below 10 and subsequently with thionyl chloride at 40 50, and finally reaction with ethanolamine at 55 60.

EXAMPLE 12 a. g of lB-phenylethylamino-4-p-tertiarybutylanilino-5(8)-amino-anthraquinone are disulphonated at room temperature in 30 ml of anhydrous.

sulphuric acid containing ml of 20% strength oleum. After the customary working up, 7 g of an isomer mixture which in the acid form corresponds to the formula and dyes wool in strongly greenish-tinged blue shades are obtained. I

The starting product was obtained by reaction of 1,4- dibromo-Samino-anthraquinone with B-phenylethylamine/potassium acetate at 90 100 and subsequent reaction of the mixture of l-B-phenylethylamino- 4-bromo-5amino-anthraquinone thylaminol bromo-Samino-anthraquinone, thereby obtained, with p-tertiary-butylaniline/potassium aceta te/copper' chloride at 145 150. I 1

EXAMPLE 13 a. 4.6 g of chlorosulphonic acid are added dropwise' and 4-[3-phenyle-' is obtained, which dyes polyamide fibres in a strongly greenishtinged blue shade. The starting product is obtained by reaction of l-isopropylamino-4-bromo-8amino-anthraquinone with paminophenol in dimethylforrnamide in the presence of copper chloride and potassium acetate at 55 60.

EXAMPLE 14 a. 5 g of l-(3-cyanoanilino)-4-m-toluidino-5-aminoanthraquinone are dissolved in 40 ml of anhydrous sulphuric acid at room temperature, 12 ml of 20% strength oleum are added over the course of 1 hour and the mixture is stirred for a further 2 hours. After the 7 are obtained, which dyes polyamide fibres in a bluishtinged green shade.

The starting compound was obtained by reaction of l-( 3 '-cyanoanilino )-4-chloro-5-amino-anthraquinone with"m-toluidine/potassium acetate/copper chloride at to 25 m1 of pyridine at 0 5; 2.5 g of l-isopropylamino-4-(p-hydroxy-phenylamino )-8-aminoanthraquinone are introduced into this solution at below 20 and the mixture is further stirred overnight, in the cold. Chromatographically, no further starting material is now detectable. After the customary working up, the dyestuff of the formula f If one of the methods described in Examples 10 14 is followed and the appropriate starting compounds are used, the dyestuffs of the formula O NIH-R listed in Table III are obtained, which dye polyamide in the colour shades indicated.

Table 111 Serial R R. Y Y Colour shade 1 CH CH: H N H greenish-tinged blue SO H 2 O Q OCH H NH: greenish-tinged blue 3 OCH- H NH, greenish-tinged blue 

1. ANTHRAQUINONE DYESTUF WHICH, IN THE FREE ACID FORM, HAS THE FORMULA 